Pulse generator

ABSTRACT

Disclosed herein is a pulse generator including a rotor adapted to be driven by an engine and including a generally annular pole piece unit consisting of a pair of pole pieces in the form of circular ring sectors arranged around a common center with the ends of the pole pieces in adjacently spaced relation and separated by high-reluctance gaps, together with means for constituting one of the pole pieces a north pole. In arrangement for constituting the other of the pole pieces a south pole, and a trigger coil located adjacent the periphery of the rotor.



1. A pulse generator comprising a rotor adapted to be driven by an engine and including a generally annular pole piece unit comprising a pair of pole pieces in the form of circular ring sectors arranged around a common center with the ends of the pole pieces in adjacently spaced relation and separated by high reluctance gaps, said pole piece unit also including means for constituting one of said pole pieces a north pole and means for constituting the other of said pole pieces a south pole, and a trigger coil located adjacent the periphery of said rotor.
 2. A pulse generator in accordance with claim 1 wherein each of said pole pieces has an arcuate extent of slightly less than 180*.
 3. A pulse generator in accordance with claim 1 wherein one of said pole pieces has an arcuate extent of slightly less than 120* and the other pole piece has an arcuate extent of slightly less than 240*, and a second trigger coil, the axes of said first and second trigger coils forming an angle of generally 120*. 